// 设置常用的屏幕尺寸
// 320px
// 定义划分的分数
html {  // 一定要写在最上面
    font-size: 50px;
}
@number:15;
@media screen and (min-width:320px) {
    html{
        font-size:(320px / @number) ;  // 加上单位px
    }
}
@media screen and (min-width:360px) {
    html{
        font-size:(360px / @number) ;  
    }
}

//375 iphone678
@media screen and (min-width:375px) {
    html{
        font-size:(375px / @number); 
    }
}

@media screen and (min-width:400px) {
    html{
        font-size:(400px / @number) ; 
    }
}

@media screen and (min-width:414px) {
    html{
        font-size:(414px / @number) ; 
    }
}

@media screen and (min-width:424px) {
    html{
        font-size:(424px / @number) ; 
    }
}

@media screen and (min-width:480px) {
    html{
        font-size:(480px / @number) ; 
    }
}

@media screen and (min-width:540px) {
    html{
        font-size:(540px / @number) ; 
    }
}

@media screen and (min-width:720px) {
    html{
        font-size:(720px / @number) ; 
    }
}

@media screen and (min-width:750px) {
    html{
        font-size:(750px / @number) ; 
    }
}